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东北林业大学学报 2009年第12期37卷 43-47页

作者：周玉美陈丽崔永一白基烨浙江林学院韩国忠北大学

以台湾金线莲(Anoectochilus formosanus)为研究材料,系统地研究了丛生芽的诱导和繁殖、生根壮苗培养以及驯化移栽等方面,旨在探索台湾金线莲快繁的最佳途径并构建其快繁体系。研究结果表明:丛生芽诱导和繁殖的最佳配方是MS+TDZ0.1mg/L... 详细信息

以台湾金线莲(Anoectochilus formosanus)为研究材料,系统地研究了丛生芽的诱导和繁殖、生根壮苗培养以及驯化移栽等方面,旨在探索台湾金线莲快繁的最佳途径并构建其快繁体系。研究结果表明:丛生芽诱导和繁殖的最佳配方是MS+TDZ0.1mg/L+椰乳5%+蔗糖3%;生根壮苗的最佳配方是MS+BA0.1mg/L+IBA0.5mg/L+2g/L;驯化移栽期间的最佳基质是水草,最佳营养液为H2。

关键词：台湾金线莲快繁丛生芽生根壮苗驯化

Rice ONAC016 promotes leaf senescence through abscisic acid signaling pathway involving OsNAP

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The Crop Journal 2024年第3期12卷 709-720页

作者： Eunji Gi Sung-Hwan Cho Suk-Hwan Kim Kiyoon Kang Nam-Chon paek Department of Agriculture Forestry and BioresourcesPlant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Division of Life Sciences Incheon National UniversityIncheon 22012Republic of Korea

Senescence-induced NAC(senNAC)TFs play a crucial role in senescence during the final stage of leaf *** this study,we identified a rice senNAC,ONAC016,which functions as a positive regulator of leaf *** expression of ONAC016 increased rapidly in rice leaves during the progression of dark-induced and natural *** onac016-1 knockout mutant showed a delayed leaf yellowing phenotype,whereas the overexpression of ONAC016 accelerated leaf ***,ONAC016 expression was upregulated by abscisic acid(ABA),and thus detached leaves of the onac016-1 mutant remained green much longer under ABA *** RT-PCR analysis showed that ONAC016 upregulates the genes associated with chlorophyll degradation,senescence,and ABA *** one-hybrid and dual-luciferase assays revealed that ONAC016 binds directly to the promoter regions of OsNAP,a key gene involved in chlorophyll degradation and ABA-induced *** together,these results suggest that ONAC016 plays an important role in promoting leaf senescence through the ABA signaling pathway involving OsNAP.

关键词： Rice ONAC016 OsNAP Leaf senescence Abscisic acid signaling

Methane Emission from Rice Fields:Necessity for Molecular Approach for Mitigation

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Rice science 2024年第2期31卷 159-178页

作者： Sujeevan RAJENDRAN Hyeonseo PARK Jiyoung KIM Soon Ju PARK Dongjin SHIN Jong-Hee LEE Young Hun SONG Nam-Chon paek Chul Min KIM Department of Horticulture Industry Wonkwang UniversityIksan 54538Korea Plant Molecular Biology and Biotechnology Research Center Gyeongsang National UniversityJinju 52828Korea Department of Southern Area Crop Science National Institute of Crop ScienceMiryang 50424Korea Department of Agricultural Biotechnology Seoul National UniversitySeoul 08826Korea Department of Plant Science Plant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Korea

Anthropogenic methane emissions are a leading cause of the increase in global averagetemperatures,often referred to as global *** soils play a significant role in methaneproduction,where the anaerobic conditions promote the production of methane by *** fields contribute a considerable portion of agricultural methane emissions,as riceplants provide both factors that enhance and limit methane *** plants harbor both methaneproducingand methane-oxidizing *** from rice roots provide source for methaneproduction,while oxygen delivered from the root aerenchyma enhances methane *** haveshown that the diversity of these microorganisms depends on rice cultivars with some genes characterizedas harboring specific groups of microorganisms related to methane ***,there is still aneed for research to determine the balance between methane production and oxidation,as rice plantspossess the ability to regulate net methane *** agronomical practices,such as fertilizerand water management,have been employed to mitigate methane ***,studiescorrelating agronomic and chemical management of methane with productivity are ***,evidences for breeding low-methane-emitting rice varieties are scattered largely due to the absence ofcoordinated breeding *** has indicated that phenotypic characteristics,such as rootbiomass,shoot architecture,and aerenchyma,are highly correlated with methane *** reviewdiscusses available studies that involve the correlation between plant characteristics and *** emphasizes the necessity and importance of breeding low-methane-emitting rice varieties inaddition to existing agronomic,biological,and chemical *** review also delves into the idealphenotypic and physiological characteristics of low-methane-emitting rice and potential breeding techniques,drawing from studies conducted

关键词： methane emission rice breeding aerenchyma greenhouse gas radial oxygen loss

Adventitious Roots and Secondary Metabolism

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生物工程学报 2008年第5期24卷 711-716页

作者： Hosakatte Niranjana Murthy Eun Joo Hahn Kee Yoeup paek Research Center for the Development of Advanced Horticultural Technology Chungbuk National University Cheongju 361-763 South Korea Department of Botany Karnatak University Dharwad 580003 India

Plants are a rich source of valuable secondary metabolites and in the recent years plant cell, tissue and organ cultures have been developed as an important alternative sources for the production of these compounds. Adventitious roots have been successfully induced in many plant species and cultured for the production of high value secondary metabolites of pharmaceutical, nutraceutical and industrial importance. Adoption of elicitation methods have shown improved synthesis of secondary metabolites in adventitious root cultures. Development of large-scale culture methods using bioreactors has opened up feasibilities of production of secondary metabolites at the industrial levels. In the present review we summarize the progress made in recent past in the area of adventitious root cultures for the production of secondary metabolites.

关键词：次生代谢植物细胞基因

A semi-analytical method for forced vibration analysis of cracked laminated composite beam with general boundary condition

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Journal of Ocean Engineering and Science 2021年第1期6卷 40-53页

作者： Sok Kim Kwanghun Kim Myongchol Ri Yongsong paek Choljun Kim Department of Information Engineering Chongjin Mine&Metal UniversityChongjin 999091Democratic People’s Republic of Korea Department of Engineering Machine Pyongyang University of Mechanical EngineeringPyongyang 999093Democratic People’s Republic of Korea Institute of Science Pyongyang University of Mechanical EngineeringPyongyang 999093Democratic People’s Republic of Korea Department of Resources Development Mechanical Engineering Pyongyang University of Mechanical EngineeringPyongyang 999093Democratic People’s Republic of Korea

In this paper,a semi-analytical method for the forced vibration analysis of cracked laminated composite beam(CLCB)is *** computational model is formulated by Timoshenko beam theory and its dynamic solution is solved using the Jacobi-Ritz *** boundary conditions(BCs)at both ends of the CLCB are generalized by the application of artificial elastic springs,the CLCB is separated into two elements along the crack,the flexibility coefficient of fracture theory is used to model the essential continuous condition of the connective *** the allowable displacement functions used to analyze dynamic characteristics of CLCB are expressed by classical Jacobi orthogonal polynomials in a more general *** accuracy of the proposed method is verified through the compare with results of the finite element method(software ABAQUS is used in this paper).On this basis,the parametric study for dynamic analysis characteristics of CLCB is performed to provide reference datum for engineers.

关键词： Semi-analytical method Cracked laminated composite beam(CLCB) Dynamic analysis General boundary condition Numerical analysis

Lattice Boltzmann method for consolidation analysis of saturated clay

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Journal of Ocean Engineering and Science 2019年第3期4卷 193-202页

作者： Pyol Kim Yong-Gun Kim Chung-Hyok paek Jun Ma Faculty of Geology Kim Il Sung UniversityPyongyang 999093Democratic People’s Republic of Korea Faculty of Global Environmental Science Kim Il Sung UniversityPyongyang 999093Democratic People’s Republic of Korea

The lattice Boltzmann method(LBM)has been widely employed in various areas of practical engineering to solve non-linear problems,due to such advantages as the simplicity of programming and the numerical *** this paper,a new numerical method for onedimensional(1D)consolidation analysis of saturated clay is proposed on the basis of the lattice Boltzmann *** first,the lattice Bhatnagar-Gross-Krook(LBGK)model is used for 1D consolidation problem of saturated clay subjected to time-dependent loading under different types of initial and boundary *** addition,the multiscale Chapman-Enskog expansion is applied to recover mesoscopic lattice Boltzmann equation to macroscopic consolidation *** a result of the numerical simulation for verification,the numerical results are proved to be in good agreement with the analytical solutions available in previous *** the evaluation of convergence and accuracy,it is demonstrated that the proposed method is more accurate and reliable than the finite difference method(FDM)for 1D consolidation analysis of saturated clay.

关键词： Saturated clay Lattice Boltzmann method Consolidation Time-dependent loading

Mutation of Oryza sativa CORONATINE INSENSITIVE 1b(OsCOI1b) delays leaf senescence

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Journal of Integrative Plant Biology 2015年第6期57卷 562-576页

作者： Sang-Hwa Lee Yasuhito Sakuraba Taeyoung Lee Kyu-Won Kim Gynheung An Han Yong Lee Nam-Chon paek Department of Plant Science Plant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National University Interdisciplinary Program in Bioinformatics Seoul National University Department of Plant Molecular Systems Biotechnology Crop Biotech InstituteKyung Hee University Department of Agricultural Biotechnology Seoul National University

Jasmonic acid （JA） functions in plant development, including senescence and immunity. Arabidopsis thaliana CORONATINE INSENSITIVE 1 encodes a JA receptor and functions in the JA‐responsive signaling pathway. The Arabidopsis genome harbors a single COI gene, but the rice （Oryza sativa） genome harbors three COI homologs, OsCOI1a, OsCOI1b, and OsCOI2. Thus, it remains unclear whether each OsCOI has distinct, additive, synergistic, or redundant func-tions in development. Here, we use the oscoi1b‐1 knockout mutants to show that OsCOI1b mainly affects leaf senescence under senescence‐promoting conditions. oscoi1b‐1 mutants stayed green during dark‐induced and natural senescence, with substantial retention of chlorophylls and photosyn-thetic capacity. Furthermore, several senescence‐associated genes were downregulated in oscoi1b‐1 mutants, including homologs of Arabidopsis thaliana ETHYLENE INSENSITIVE 3 and ORESARA 1, important regulators of leaf senescence. These results suggest that crosstalk between JA signaling and ethylene signaling affects leaf senescence. The Arabidopsis coi1‐1 plants containing 35S：OsCOI1a or 35S：OsCOI1b rescued the delayed leaf senescence during dark incubation, sug-gesting that both OsCOI1a and OsCOI1b are required for promoting leaf senescence in rice. oscoi1b‐1 mutants showed significant decreases in spikelet fertility and grain weight, leading to severe reduction of grain yield, indicating that OsCOI1‐mediated JA signaling affects spikelet fertility and grain filling.

关键词： Jasmonic acid leaf senescence OsCOI1b rice stay-green

GIGANTEA Shapes the Photoperiodic Rhythms of Thermomorphogenic Growth in Arabidopsis

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Molecular Plant 2020年第3期13卷 459-470页

作者： Young-Joon Park Jae Young Kim June-Hee Lee Byoung-Doo Lee Nam-Chon paek Chung-Mo Park Department of Chemistry Seoul National UniversitySeoul 08826Korea Department of Plant Science Seoul National UniversitySeoul 08826Korea Plant Genomics and Breeding Institute Seoul National UniversitySeoul 08826Korea These authors contributed equally to this article

Plants maintain their internal temperature under environments with fluctuating temperatures by adjusting their morphology and architecture,an adaptive process termed ***,the rhythmic patterns of plant thermomorphogenesis are governed by day-length ***,it remains elusive how thermomorphogenic rhythms are regulated by ***,we show that warm temperatures enhance the accumulation of the chaperone GIGANTEA(Gl),which thermostabilizes the DELLA protein,REPRESSOR OF ga1-3(RGA),under long days,thereby attenuating PHYTOCHROME INTERACTING FACTOR 4(PIF4)-mediated *** contrast,under short days,when Gl accumulation is reduced,RGA is readily degraded through the gibberellic acid-mediated ubiquitination-proteasome pathway,promoting thermomorphogenic *** data indicate that the GI-RGA-PIF4 signaling module enables plant thermomorphogenic responses to occur in a day-length-dependent *** propose that the Gl-mediated integration of photoperiodic and temperature information shapes thermomorphogenic rhythms,which enable plants to adapt to diel fluctuations in day length and temperature during seasonal transitions.

关键词： thermomorphogenesis day length Gl RGA PIF4

Wearable and stretchable conductive polymer composites for strain sensors:How to design a superior one?

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Nano Materials Science 2023年第4期5卷 392-403页

作者： Liwei Lin Sumin Park Yuri Kim Minjun Bae Jeongyeon Lee Wang Zhang Jiefeng Gao Sun Ha paek Yuanzhe Piao Department of Applied Bioengineering Graduate School of Convergence Science and TechnologySeoul National UniversitySeoul08826South Korea Department of Neurosurgery Movement Disorder CenterSeoul National University HospitalHypoxia/Ischemia Disease InstituteCancer Research InstituteSeoul National University College of MedicineSeoul03080South Korea School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhouJiangsu225002China Institute of Textiles and Clothing The Hong Kong Polytechnic UniversityHung HomHong Kong SAR999077China Advanced Institutes of Convergence Technology 145 Gwanggyo-roYeongtong-guSuwon-siGyeonggi-do443-270South Korea

Wearable and stretchable strain sensors have potential values in the fields of human motion and health monitoring,flexible electronics,and soft robotic *** wearable and stretchable strain sensors can be directly attached to human skin,providing visualized detection for human motions and personal *** polymer composites(CPC)composed of conductive fillers and flexible polymers have the advantages of high stretchability,good flexibility,superior durability,which can be used to prepare flexible strain sensors with large working strain and outstanding *** review has put forward a comprehensive summary on the fabrication methods,advanced mechanisms and strain sensing abilities of CPC strain sensors reported in recent years,especially the sensors with superior ***,the structural design,bionic function,integration technology and further application of CPC strain sensors are prospected.

关键词： Wearable strain sensors Conductive polymer composites Mechanism Sensing performance